Storage system for storing a fluid medium, preferably hydrogen, fuel cell system, hydrogen combustion engine system, fuel cell-powered vehicle, hydrogen-powered vehicle

The cylindrical tank system with dual shell elements and end cap support ensures a durable, pressure-tight seal by distributing radial forces, addressing the challenge of maintaining connections under pressure and temperature fluctuations in hydrogen tanks.

DE102024138091A1Pending Publication Date: 2026-06-18ROBERT BOSCH GMBH
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Patent Information

Authority / Receiving Office
DE · DE
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-12-16
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

Existing hydrogen tank systems face challenges in maintaining a pressure-tight connection between tank components due to dimensional changes from pressure and temperature fluctuations, leading to potential leaks and reduced service life.

Method used

A storage system design featuring a cylindrical tank with two shell elements and end cap elements that utilize a sealing adhesive and tie rod elements to distribute radial forces, ensuring a self-reinforcing seal and structural support, using materials like aluminum and carbon fiber composite.

Benefits of technology

This design achieves a robust and long-lasting seal at high pressures, preventing deformation and stress peaks, thereby enhancing the system's durability and safety.

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Abstract

Storage system (1) for storing a fluid medium, preferably hydrogen, comprising at least one tank container (200) in a basic cylindrical shape with two ends (2000, 2001) for storing fluid medium, in particular hydrogen, wherein the tank container (200) has a first shell element (201), which forms a tank interior (206), and a second shell element (202), which surrounds the first shell element (201). Furthermore, the storage system (1) has an end cap element (208) arranged in each of the two ends (202) of the tank container (200), which end cap element (208) at least partially surrounds the first shell element (201) and the second shell element (202).Furthermore, at least one recess (211) is formed in the end cap element (208) in which the first shell element (201) is at least partially received and is arranged in this recess (211) in a materially interlocking manner.
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Citation Information

Patent Citations

  • Pressure vessel for storing fuel in a motor vehicle

    DE102016208376A1

  • End piece for a pressure tank system and pressure tank system

    DE102021106231A1

  • Method for controlling a tank device and tank device for storing a gaseous medium

    DE102021207190A1

  • High-pressure gas storage system having adaptable morphology

    US20220260207A1